// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using UnityEngine;

namespace Client.GUI
{
    /// <summary>
    /// Manages the mouse locked into the game
    /// </summary>
    public class MouseLock : MonoBehaviour
    {
        // --- Messages ---

        /// <summary>
        /// Lock and set the mouse to not visible
        /// </summary>
        private void Start()
        {
            LockMouse();
        }

        /// <summary>
        /// Escaping and capture of the mouse
        /// </summary>
        private void Update()
        {
            if (Input.GetButtonDown("Fire1") && Cursor.visible)
            {
                LockMouse();
            }
            else if (Input.GetKeyDown(KeyCode.Escape))
            {
                Cursor.lockState = CursorLockMode.None;
                Cursor.visible = true;
            }
        }

        // --- Functions ---

        /// <summary>
        /// Lock the mouse
        /// </summary>
        private static void LockMouse()
        {
            if (!Application.isEditor)
            {
                Cursor.lockState = CursorLockMode.Locked;
                Cursor.visible = false;
            }
        }
    }
}